Benefit Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Apr. 01, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Projected benefit obligation		$ 13,418	$ 14,571
Salary expense		54,500	57,400	$ 54,600
Expense for contributions to savings and investment plan		$ 15,700	16,000	14,000
Maximum annual salary deferral, percent		5.00%
Vesting period of employer matching contributions		2 years
Unsecured general liability		$ 4,800	3,600
Stock-based compensation expense		28,988	33,102	28,788
Unrecognized stock-based compensation		$ 29,100
Average remaining vesting, years		1 year 9 months 18 days
Award vesting period		1 year
Vesting percentage		33.33%
Stock Options and Restricted Stock
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Stock-based compensation expense		$ 29,000	33,100	28,800
Stock awards granted		$ 3,000	2,300
Share-based compensation, expiration period		1 year
Performance Shares
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Award vesting period		3 years
RSUs
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Award vesting period		3 years
Common Stock
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Shares of common stock available for issuance (in shares)	2,700,000
Average price per share ( in usd per share)	$ 8.47
2021 Incentive Compensation Plan | Common Stock
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Share-based compensation, shares authorized (up to) (in shares)		14,500,000
2023 Incentive Compensation Plan | Common Stock
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Shares of common stock available for issuance (in shares)		9,600,000
Other pension plan | Non Qualified Plans For Former Directors
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Projected benefit obligation		$ 811	962
Other pension plan | Former Directors And Senior Management
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Projected benefit obligation		195	246
Obligation included in other comprehensive loss, net of tax		447	519
Obligation included in other comprehensive loss, tax		170	198
Obligation included in other comprehensive loss, net of tax, amount expected to be reclassified		617
Supplemental Executive Retirement Income Agreement | Oritani Financial Corp.
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Projected benefit obligation		$ 10,800	11,600
Benefits payment period		20 years
Benefit expense		$ 1,300	$ 1,500	1,800
Pension
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Discount rate used to compute the obligation		5.57%	5.00%
Projected benefit obligation		$ 170,523	$ 179,918
Obligation included in other comprehensive loss, net of tax		22,777	33,265
Benefit expense		$ (13,416)	$ (13,676)	(14,350)
OPEB
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Discount rate used to compute the obligation		5.51%	4.97%
Projected benefit obligation		$ 5,153	$ 5,451
Obligation included in other comprehensive loss, net of tax		(543)	(715)
Benefit expense		185	225	79
Nonqualified Plan
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Expense for contributions to savings and investment plan		$ 770	$ 747	$ 447